Voltaic Construct + Memnarch + Viridian Joiner

Voltaic Construct

Memnarch

Viridian Joiner

How it works

1. Cause Viridian Joiner to become an artifact using Memnarch.
2. Activate Viridian Joiner by tapping it, adding at least 3.
3. Activate Voltaic Construct by paying 2, untapping Viridian Joiner.
4. Repeat from step 2.

By leveraging Memnarch to turn Viridian Joiner into an artifact, we lay the groundwork for a self-sustaining loop once its power reaches three or greater. Tapping the modified mana dork provides the green mana needed to feed Voltaic Construct's ability, which in turn untaps the joiner so the process can repeat indefinitely. Because Voltaic Construct untaps any artifact creature, this engine effortlessly churns out infinite green mana and infinite untaps of artifact creatures you control.